Cydalics CYDALICS

About Cydalics

Built by senior
practitioners.
Shaped by sovereignty.

Cydalics is a two-founder cybersecurity company, built in Australia and Switzerland, that monitors radio signals, network traffic and AI agents on customer infrastructure.

Why we exist

Operations have moved beyond the office network.

They now run across radio signals, connected devices, AI-driven workflows and long chains of third-party dependencies. Existing safeguards remain essential, but they leave those layers unwatched. Cydalics watches them.

The team

Who we are.

Two founders with 50+ years of combined experience on both sides of the security industry: buying it, running it, and building it.

Holger Arends

Holger Arends

Co-Founder & CEO

25 years in cybersecurity across military, telecommunications, software and infrastructure. Former innovation lead at one of Australia's largest telcos. Based in Queensland, Australia.

Daniel Straessle

Daniel Straessle

Co-Founder & COO

25 years in security consulting, IT and OT operations, and audit. Currently CISO for the outsourced operations of two major Swiss banks. Based in Switzerland.

Supported by local teams and advisors across the United States, Europe and the Middle East.

Where we operate

Australia and Switzerland.

We operate from Brisbane and Zurich, serving Asia-Pacific, Europe and the Middle East.

Asia-Pacific

Australia

Headquarters, engineering and Asia-Pacific operations, based in Brisbane.

Aligned with: Essential Eight · APRA CPS 234 · IRAP context

Europe

Switzerland

European operations, regional support and partnerships, based in Zurich.

Aligned with: ISO 27001 · NIS2 · DORA · NCA ECC · SAMA CSF

Principles

What we stand for.

Your data stays with you.

We deploy on premises, fully offline, or under your control in-country.

Defensible findings.

Every engagement produces evidence that boards, auditors and regulators can rely on.

Practitioner-led.

Founded and built by people who have run security programmes, not just sold them.

Independent.

Privately held, with no obligations beyond our customers.

Who we serve

Regulated industries and sensitive sites.

Want to learn more?

Tell us about your environment and we'll suggest the right next step.

Book a demo